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Finding the Fourth Proportional to 47,999.80, 71,907.90 and 25,805.80

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Solution

The fourth proportional to 47,999.80, 71,907.90 and 25,805.80 is: 38,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,999.80 : 71,907.90 = 25,805.80 : x
  2. Step 2: Convert to fraction form
    47,999.80/71,907.90 = 25,805.80/x
  3. Step 3: Cross multiply
    47,999.80x = 71,907.90 × 25,805.80
  4. Step 4: Simplify right side
    47,999.80x = 1,855,640,885.82
  5. Step 5: Solve for x
    x = 1,855,640,885.82/47,999.80
  6. Step 6: Final answer
    x = 38,659.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.